公开(公告)号：US20130168610A1

公开(公告)日：2013-07-04

申请号：US13780817

申请日：2013-02-28

Applicant: SHOWA DENKO K.K.

Inventor： Youichi NANBA ,  Masataka TAKEUCHI ,  Akinori SUDOH ,  Satoshi IINOU

IPC: H01M4/133

CPC classification number: H01M4/133 ,  H01M4/364 ,  H01M4/366 ,  H01M4/587 ,  H01M4/62 ,  H01M8/0213 ,  H01M8/0221 ,  H01M8/0226 ,  H01M10/052

Abstract: The invention relates to a carbon material for forming a battery electrode, comprising carbon powder having a homogeneous structure which is produced by causing an organic compound, serving as a raw material of a polymer, to deposit onto and/or permeate into carbonaceous particles, and subsequently polymerizing the organic compound, followed by thermal treatment at a temperature of 1,800 to 3,300° C., which comprises a structure which is substantially uniform throughout the entirety of the particle from the surface to the central core where a graphite crystal structure region and an amorphous structure region are distributed. By using the material, a battery having high discharging capacity and low irreversible capacity, with excellent coulombic efficiency and excellent cycle characteristics can be fabricated.

Abstract translation: 本发明涉及一种用于形成电池电极的碳材料，其包含通过使作为聚合物的原料的有机化合物沉积到和/或渗透到碳质颗粒中而制成的具有均匀结构的碳粉末，以及 随后将有机化合物聚合，然后在1,800至3300℃的温度下进行热处理，其包括从表面到中心芯的整个颗粒基本上均匀的结构，其中石墨晶体结构区域和 非晶结构区域分布。 通过使用该材料，可以制造具有高放电容量和低不可逆容量的电池，具有优异的库仑效率和优异的循环特性。

公开(公告)号：US20200308056A1

公开(公告)日：2020-10-01

申请号：US16768231

申请日：2018-12-25

Applicant: SHOWA DENKO K.K.

Inventor： So MIYAISHI ,  Satoshi IINOU

IPC: C04B35/10 ,  C09K3/14

Abstract: A precursor of an alumina sintered compact including aluminum, yttrium, and at least one metal selected from iron, zinc, cobalt, manganese, copper, niobium, antimony, tungsten, silver, and gallium. The aluminum content is 98.0% by mass or more as an oxide (Al2O3) in 100% by mass of the precursor of an alumina sintered compact; the yttrium content is 0.01 to 1.35 parts by mass as an oxide (Y2O3) based on 100 parts by mass of the content of the aluminum as an oxide; the total content of the metals selected from the foregoing group is 0.02 to 1.55 parts by mass as an oxide based on 100 parts by mass of the content of aluminum as an oxide; and the aluminum is contained as α-alumina. Also disclosed is an alumina sintered compact, and a method for producing an alumina sintered compact and for producing abrasive grains.